Feldt



2 Sheets-Sheet 1.

(No Model.)

N. H. BORGPELDT.

AUXILIARY PROPELLER FOR VESSELS.

Patented Aug. 2, 1887.

on m M W WITNESSES:

(No Model.) 2 Sheets-Sheet 2. N. H. BORGPELDT.

AUXILIARY PROPELLER FOR VESSELS.

9 9 4 7 6 3 nm N ATTORA/Elf;

UNITED STATES PAT NT OFFICE.

AUXILIARY PROPELLER FOR VESSELS.

SPECIFICATION forming part of Letters Patent No. 367,499, dated August 2, 1887.

Application filed August 30, 1886. Serial No. l12,l63. (No model.)

To aZZ whom it may concern:

Be it known that I, NICHOLAS H. Bose- FELDT, a resident of New York city, in the county and State of New York, haveinvented an Improved Auxiliary Propeller for Steamships, of which the following is a full, clear, and exact description, reference being made to the accompanying drawings, in which- Figure l is atop view of partof avessel having my improved auxiliary propellers. Fig. 2 is a cross'section of the same on the line mm, Fig. 1. Fig. 3 is a detail section on the liney I Fig. 2. -Fig. 4 is a detail face view of the upper part of one of the propeller carrying frames.

The object ofthis invention is to supply oceangoing steamships and other vessels with means for propelling thembysteam-powerin case the main propelling apparatus should break or get out of order.

The invention consists, principally, incombining one or more auxiliary engines, which are adapted to be placed on deck, with one or more frames suspended from the framing of said engines and carrying each an auxiliary propeller, and means for revolving the same from the engine, and with fore and aft bracechains, which connect with the propeller-carrying shaft, which is swiveled in said suspended frame.

In the drawings, the letter A-represents the deck of a steamship or other vessel. Upon this deck are shown to be placed two frames, B B, each supporting one or more cylinders, G, to which steam may be conveyed from a boiler for the purpose of reciprocating the piston -rod D of such cylinder.

The outer part of each frame B, which overhangs the deck of the vessel A, carriesacrankshaft, E, the ends or gudgeons aof which extend beyond the sides of the frame B into bearingsj, that project from said frame and serve as swivelsupports for a-frame, F, that is suspended from the bearings j and hangs along the side of the vessel, reaching below the water-line, as is more clearly shown in Fig. 2.

In the lower partof the frameFare thebearings for a shaft, G, upon which an auxiliary propeller, H, is loosely hung. The shaft E carries pulleys b, and the propeller H carries pulleys d, that are also loose on the shaft G. Over these pulleys are laid chains I, which are to transmit rotary motion from the shaft E to the propeller H.

The frame F, it willbeseen, is composed substantially of two main side pieces, 06, of which each is suspended from one of the bearings or gudgeon-blocks j, and at the lower part these side pieces, 06, are united by the shaft G,whicl1 carries the loose propeller, and which constitotes the main transverse connecting-brace between the pieces 0 6. Still other connectingbraces, f, (shown in Figs. 2 and 4,) may also be applied to the side pieces, 6 e, of each frame F for the purpose of furnishing greater strength.

The ends'of the shaft G carry eyes or holders 9 g, to which are connected stay-chains J and L. The stay-chain J extends aft to a suitable bolt or fastening, 71., and the chain Lextends forward to a suitable bolt or fastening, 13.

Having now described the construction of my apparatus, I desire to say that it is my intention to supply ocean-going steamships or similar vessels with two frames, B F, and the appurtenances heretofore specified, so that in case of the breaking or injury to the main propelling apparatus of such a vessel the auxiliary apparatus may quickly be put into operation. In such a case the frames B are fastened on deck with their cylinders O, and the framesF, which are carried by the shaft E, are letdown over the side of the ship until they rest against her hull and extend beneath the water-line sufficiently far to enable the auxiliary propellers H to operate. The chains I, when the engines are set in motion, will revolve the propellers H, and thus impart motion to the ship. The brace-chains J and L hold the vframes F and the auxiliary propellers in position.

For facilitating the connection of theframe F to the two bearings j j, that project from the frame B, I prefer to hinge the upper part of the frame F, by pins Z, to the body of said frame F, and to lock this hinged portion to said body by screws or bolts in, so that upon unfastening the screws m the said upper portion, a, of the frame F may be turned on its hinge Z, to be easily applied to or taken from the bosses or bearingsj of the frame B.

By uniting the stay-chains J and L to the which are united to the stay-chains J and L, and with the propeller H, which is loosely IO hung upon the shaft G, as specified.

eyes 1 9, that are carried by the shaft G, the strain of these chains is wholly removed from the frame proper, F, and absorbed entirely by the shaft G. i 5 I NICHOLAS II. BORGFELD I.

The frame F,snspended at its upper end from Witnesses: a pivoted support and combined at its lower GUSTAV SOHNEPPI J,

part with the transverse shaft G, the ends of HARRY M. TURK. 

